//
//  HexColor.swift
//  MoodDiary
//
//  Created by MoodDiary on 2020/4/26.
//  Copyright © 2020 MoodDiary. All rights reserved.
//

import UIKit

extension UIColor {
    
    @objc class func hexColor(hex:String) -> UIColor {
        var cstr = hex.trimmingCharacters(in:  CharacterSet.whitespacesAndNewlines).uppercased() as NSString;
        if (cstr.length < 6) {
            return UIColor.clear;
        }
        if (cstr.hasPrefix("0X")) {
            cstr = cstr.substring(from: 2) as NSString
        }
        if (cstr.hasPrefix("#")) {
            cstr = cstr.substring(from: 1) as NSString
        }
        if (cstr.length != 6) {
            return UIColor.clear;
        }
        var range = NSRange.init()
        range.location = 0
        range.length = 2
        //r
        let rStr = cstr.substring(with: range);
        //g
        range.location = 2;
        let gStr = cstr.substring(with: range)
        //b
        range.location = 4;
        let bStr = cstr.substring(with: range)
        var r :UInt32 = 0x0;
        var g :UInt32 = 0x0;
        var b :UInt32 = 0x0;
        Scanner.init(string: rStr).scanHexInt32(&r);
        Scanner.init(string: gStr).scanHexInt32(&g);
        Scanner.init(string: bStr).scanHexInt32(&b);
        return UIColor.init(red: CGFloat(r)/255.0, green: CGFloat(g)/255.0, blue: CGFloat(b)/255.0, alpha: 1);
    }
    
    class func mainColor() -> UIColor {
        return hexColor(hex: "#FFD877")
    }
    
}
